docker: remove config

docker/README.md

@@ -1,9 +0,0 @@
-### Docker
-
-##### Usage
-
-Fish:
-- docker build -t fish-alpine fish/alpine
-- docker build -t fish-ubuntu fish/ubuntu
-- docker run -it --rm fish-alpine
-- docker run -it --rm fish-ubuntu

docker/fish/alpine/Dockerfile

@@ -1,13 +0,0 @@
-FROM alpine
-
-RUN apk update && \
-    apk add --no-cache fish
-
-SHELL ["fish", "--command"]
-
-RUN function fish_prompt; echo -n "> "; end; funcsave fish_prompt
-RUN set -U fish_greeting ''
-
-ENV SHELL /usr/bin/fish
-
-ENTRYPOINT [ "fish" ]

docker/fish/ubuntu/Dockerfile

@@ -1,15 +0,0 @@
-FROM ubuntu:focal
-
-RUN apt-get update --quiet && \
-    apt-get install --quiet --yes software-properties-common && \
-    add-apt-repository --yes ppa:fish-shell/release-3 && \
-    apt-get install --quiet --yes fish
-
-SHELL ["fish", "--command"]
-
-RUN function fish_prompt; echo -n "> "; end; funcsave fish_prompt
-RUN set -U fish_greeting ''
-
-ENV SHELL /usr/bin/fish
-
-ENTRYPOINT [ "fish" ]